The ICG NxtLink series of Iridium systems delivers an internal fax option to permit air-to-ground and ground-to-air faxing capabilities using a standard fax machine. This service is a “store and forward” service using a ground side fax server to transact the data between the originating and destination fax machines. Faxing is available between an aircraft fax machine and any global fax machine. Connections to a fax machine are via a standard “Tip and Ring” Telco circuit. Sending or receiving faxes is simple and familiar with no special dialing commands or requirements.